Hermes is a JavaScript engine optimized for fast start-up of React Native apps.
in case you opt not to use hermes the alternative engine will be JSC.
JavaScriptCore (JSC) is an open-source JavaScript engine developed by Apple.
In the context of React Native, JSC is used to execute JavaScript code on both Android and iOS platforms.

I encountered the error below when trying to build an android apk for a blockchain project.
"Execution failed for task ':react-native:ReactAndroid:hermes-engine:configureBuildForHermes'."

Iam looking for the wayout of the error.